@font-face {
    font-family: 'icomoon';
    src: url('./icon_font/iconfont.ttf');
}
.clearfix::before,.clearfix::after{
    content: "";
    display: block;
}
.clearfix::after{
    clear: both;
}
[class^="icon-"],
[class*=" icon-"] {
    font-family: 'icomoon';
    font-style: normal;
    font-weight: normal;
    font-variant: normal;
    text-transform: none;
    line-height: 1;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body,ul,li,a,p{
    list-style: none;
    padding: 0;
    margin: 0;
    text-decoration: none;
}

#canvas{
    display: block;
    position: fixed;
    z-index: -99;
    width: 100%;
    height: 100%;
}

.container{
    padding: 30px 0;
}
.wrapper{
    position: relative;
    width: 760px;
    margin: 0 auto;
    padding: 10px;
    border: 1px solid #295aa6;
    border-radius: 20px;
}
.nav-con{
    float: left;
    width: 360px;
    border-radius: 10px;
    
    overflow: hidden;
}
.nav-con .nav-item+.nav-item .title{
    border-top: 1px solid #666;
}
.nav-con .nav-item .title{
    position: relative;
    height: 45px;
    line-height: 45px;
    padding-left: 15px;
    font-size: 16px;
    font-weight: 400;
    color: #fead6b;
    background: #295aa6;
    cursor: pointer;
    font-weight: 400;
    user-select: none;
}

.nav-con .nav-item .title.active{
   font-weight: bolder;
}
.nav-con .nav-item .title.active .down{
    transform:  rotate(180deg);
}
.nav-con .nav-item .icon{
font-size: 20px;
margin-left: 5px;
margin-right: 15px;
vertical-align: middle;
}
.nav-con .nav-item .down{
    position: absolute;
    right: 0;
    height: 100%;
    line-height: 45px;
    padding: 0 10px;
    font-size: 14px;
    transition: transform 0.4s;
    transform-origin: center;
}
.nav-con .sub-nav{
display: none;
}
.nav-con .sub-item{
    position: relative;
}
.nav-con .sub-item+.sub-item{
    border-top: 1px solid #fff;
}
.nav-con .sub-item a{
    display: block;
    height: 40px;
    line-height: 40px;
    background: #fead6b;
    color: #295aa6;
    font-size:14px;
    padding-left: 20px;
}
.nav-con .sub-item a:hover{
    background: #51bdbd;
    color: #FFF;
}
.nav-con .sub-item div{
    display: none;
}
.wrapper .des{
   position: absolute;
   top: 0;
   right: 0;
   line-height: 25px;
   font-size: 14px;
   color: #333;
   text-indent: 2em;
   border: 1px solid #51bdbd;
    border-radius: 10px;
    margin: 10px;
    padding: 15px;
    box-sizing: border-box;
    width: 390px;
    height: calc(100% - 20px);
    background: cadetblue;
    overflow-y: auto;
}
.fixed{
    position: fixed;
    top: 15px;
    width: 358px;
}
